Black Art Dynamics - Tyres and load transfer, Baseline spring specification

[Racecomp Engineering]

Originally Posted by bholliday

Andy, thanks for the suspension theory link! That paper, along with the others in the series, helped me better understand spring frequencies, sway bar balancing, and shock curves. The explanation on setting up the shock curves was especially helpful, and answered several questions I had after reading other internet sources on the subject.

If anybody else is interested, the 6 part series can be found here:

http://www.optimumg.com/technical/technical-papers/

OptimumG is really great. Sometimes you have to read one of the tech papers over and over again, but it really helps put things together.

- Andy

[Hoosier Daddy]

Originally Posted by Gunman

A car that goes thru the corners flat, is better for aero though.

A car that runs flat-out, or as fast as possible, is what's important in terms of aero. An IndyCar runs as much tail down as it can for straight away performance, just like a stockcar on a super speedway, but tail up nose down makes more downforce for cornering. It's a compromise based on what optimizes lap time for differing track configurations. High downforce thus high nose down rake for low speed tracks like LRP and low downforce and low rake for high speed tracks like Road America.

[Shankenstein]

Originally Posted by Captain Snooze

Doesn't the Pagani Huayra do this? Independent front left and right and rear left and right spoiler activation. There is also a thread somewhere on these forums about an aftermarket manufacturer with separate left and right sections.

Stop looking. This crowd:http://aeromotions.com/products/s2-dynamic

Filing this away under "things to blow my lottery winnings on"

400 lbs of downforce during braking (from 150 mph) and only loading the inside tire during turning. I'm curious how the control module works, if it's just an accelerometer or if you wire it up to the steering and brakes.

[ame="https://www.youtube.com/watch?v=hKb5Vcn_3Yw"]1st Place Finish NASA Homestead Speedway 11-6-10 rear camera view - YouTube[/ame]

[Hoosier Daddy]

A lot is said on that aeromotions website but little is told. :S

[Gunman]

Originally Posted by Hoosier Daddy

A car that runs flat-out, or as fast as possible, is what's important in terms of aero. An IndyCar runs as much tail down as it can for straight away performance, just like a stockcar on a super speedway, but tail up nose down makes more downforce for cornering. It's a compromise based on what optimizes lap time for differing track configurations. High downforce thus high nose down rake for low speed tracks like LRP and low downforce and low rake for high speed tracks like Road America.

Definitely. We would run the car nose up at Lemans, but over here nose down for downforce. We always watched splitter height in the corners though, and worked to keep it fairly level, but of course drivers always like to take the curbs, but that's another story, lol.

[superleggera]

Originally Posted by Captain Snooze

Doesn't the Pagani Huayra do this? Independent front left and right and rear left and right spoiler activation. There is also a thread somewhere on these forums about an aftermarket manufacturer with separate left and right sections.

Stop looking. This crowd:http://aeromotions.com/products/s2-dynamic

$17.5k for the F430... yikes